Rao K V, Mitchison D A, Nair N G, Prema K, Tripathy S P
Br Med J. 1970 Aug 29;3(5721):495-7. doi: 10.1136/bmj.3.5721.495.
Sulphadimidine acetylation studies were undertaken in 103 patients, 52 of whom had been classified as slow and 51 as rapid inactivators of isoniazid by a standard microbiological assay method. Each patient received sulphadimidine by mouth in a dose of 44 mg./kg. body weight, and free and total sulphadimidine were estimated in blood and urine collected at six hours. The findings suggest that patients may be classified as slow inactivators of isoniazid if the proportion of acetylated sulphadimidine (total minus free) is (a) less than 25% in blood or (b) less than 70% in urine. The sulphadimidine test is easy to perform and the result is available the same day; urine specimens for the test can be stored at room temperature for over a week without any loss of drug.
对103名患者进行了磺胺二甲嘧啶乙酰化研究,其中52名患者通过标准微生物检测方法被归类为异烟肼慢灭活者,51名患者被归类为异烟肼快灭活者。每位患者口服磺胺二甲嘧啶,剂量为44毫克/千克体重,在6小时时采集血液和尿液样本,测定游离和总磺胺二甲嘧啶含量。研究结果表明,如果乙酰化磺胺二甲嘧啶(总含量减去游离含量)的比例(a)在血液中低于25%或(b)在尿液中低于70%,那么这些患者可被归类为异烟肼慢灭活者。磺胺二甲嘧啶检测操作简便,当天即可得到结果;检测用的尿液样本可在室温下保存一周以上而药物无任何损失。